<template>

    
  
  <view class="goods-detail">
    <!-- 轮播图 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000">
      <swiper-item v-for="(item, i) in goodsDetail.pics" :key="i" @click="previewImage(i)">
        <image class="swiper-item-image" :src="item.pics_big"></image>
      </swiper-item>
    </swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box" v-if="Object.keys(goodsDetail).length > 0">
      <!-- 商品价格 -->
      <view class="price">￥{{Number(goodsDetail.goods_price).toFixed(2)}}</view>
      <!-- 信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名称 -->
        <view class="goods-name">{{goodsDetail.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费{{cart.length}}{{total}}</view>
    </view>
    
    <!-- 产品介绍 -->
    <rich-text :nodes="goodsDetail.goods_introduce"></rich-text>
    
    
    <!-- 商品购物导航 -->
    <view class="goods-nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
    
  </view>

</template>

<script>
  
  import { mapState, mapGetters ,mapMutations } from 'vuex'
  
  export default {
    data() {
      return {
        goodsDetail: {}, // 产品详情
        
        options: [{
            icon: 'shop',
            text: '店铺',
        }, {
            icon: 'cart',
            text: '购物车',
            info: 0
        }],
        buttonGroup: [{
          text: '加入购物车',
          backgroundColor: '#ff0000',
          color: '#fff'
        },
        {
          text: '立即购买',
          backgroundColor: '#ffa200',
          color: '#fff'
        }],
      };
    },
    computed: {
      ...mapState('m_cart', ['cart']),
      ...mapGetters('m_cart', ['total'])
    },
    watch: {
      // total(newTotal){
      //   this.options[1].info = newTotal
      // }
      total: {
        // handler: (newTotal) => {
        //   this.options[1].info = newTotal
        // },
        handler: function(newTotal) {
          this.options[1].info = newTotal
        },
        immediate: true
      }
    },
    onLoad(options) {
      // this.options[1].info = this.total
      // 发起网络请求
      this.getGoodsDetail(options.goods_id)
    },
    methods: {
      ...mapMutations('m_cart', ['addToCart']),
      async getGoodsDetail(goods_id){
        const {data: res} = await uni.$http.get('/goods/detail',{goods_id: goods_id})
        console.log(res)
        // 判断数据异常
        if(res.meta.status !== 200) return uni.$showMsg()
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="vertical-align: middle"')
                                                                 .replace(/webp/g, 'jpg')
        // 设置页面数据
        this.goodsDetail = res.message
      },
      // 图片预览
      previewImage(i){
        console.log('====', typeof i)
        uni.previewImage({
          current: i,
          urls: this.goodsDetail.pics.map(item => item.pics_big)
        })
      },
      // 商品购物导航事件处理函数
      onClick(e){
        console.log('左侧',e)
        if(e.content.text === '购物车'){
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      buttonClick(e){
        console.log('右侧',e)
        if(e.content.text === '加入购物车'){
          this.addToCart({
            goods_id: this.goodsDetail.goods_id,
            goods_small_logo: this.goodsDetail.goods_small_logo,
            goods_name: this.goodsDetail.goods_name,
            goods_price: this.goodsDetail.goods_price,
            goods_state: true,
            goods_count: 1
          })
        }
      }
      
    },

  }
</script>

<style lang="scss">


    
    .goods-detail {
      height: 100%;
      padding-bottom: 50px;
      
      swiper {
          height: 750rpx;
          .swiper-item-image {
            width: 100%;
            height: 100%;
          }
        }
        
      .goods-info-box {
        padding: 10px;
        padding-right: 0;
        .price {
          color: #c00000;
          font-size: 18px;
          margin: 10px 0;
        }
        .goods-info-body {
          display: flex;
          justify-content: space-between;
          .goods-name {
            font-size: 13px;
            padding-right: 10px;
          }
          // 收藏区域
          .favi {
            width: 120px;
            font-size: 12px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            border-left: 1px solid #efefef;
            color: gray;
          }
        }
        // 运费
        .yf {
          margin: 10px 0;
          font-size: 12px;
          color: gray;
        }
      }
      
      .goods-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
      }
    }
  


  



</style>
